342 Mr. Jeffreys on the Testaceous Pneumonobranchous 



Under stones in moist sheltered situations, but not very 

 common. The shell varies much in size. Dead ones are' 

 of an opaque white colour. 



First noticed as British by Mr. J. S. Miller in the Annals 

 of Philosophy for 1822. 



25. ROTUNDATA. 



Animal pallid^ griseum, supernfe punctatum. Sustentaculum 

 , perbreve, hyalinum. 



Testa depressior, subcarinata, striis argutis divaricatis ex- 

 arata, rufo-maculata. Anfractus 6 — 7. Apertura com- 

 pressa, suborbiculata, emarginata. Umbilicus vald^ 

 patens, sinu profundo. 



Long. 0.125.— Diam. 0.375. 

 Helix rotundata. Miill. Verm. 2. p. 29- Drap. Hist, des 

 Moll. p. 114. t. 8. f.4r— 7. 



radiata. Da Costa Brit. Conch, p. 57. t. 4.f. 15, 



16. Mont. Test. Brit. p. 432. t. 24. /. 3. Maton 

 ^ Rackett in Linn. Trans. 8. p. 199- 

 a. viridescenti-albida, immaculata. 



Common in shady places, under decayed wood, &c. A 

 single specimen of the variety has occurred to me from the 

 neighbourhood of Swansea. 



26. Umbilicata. 



Animal nigro-griseum, politum. Tentacula superiora cylin- 

 drica. 



Testa subdepressa, subcarinata (praesertim juniores), diva- 

 ricate striata, brunnea. Anfractus vix 5, suturd exca- 

 vate. Apertura compressa, suborbiculata. Umbilicus 

 ya\dh patens. 



Long. 0.05. — Diam. 0.1. 



Helix 



